Simple but potentially expensive at high incomes:
Income tax: Your business profit gets taxed as personal income at progressive rates. In Zurich, a single person earning CHF 100,000 pays approximately 22% effective rate (federal + cantonal + communal taxes combined).
Wealth tax: Your business assets count toward personal wealth, taxed annually (typically 0.1-0.7% depending on canton).
AVS/AHV contributions: Self-employed individuals pay social security (9.65% of net income if earning CHF 58,800+, minimum CHF 503/year).
No corporate tax: You avoid the double taxation issue entirely.
Total tax burden example (Zurich, single, CHF 100k profit):
- Income tax: ~CHF 22,000
- AVS/AHV: ~CHF 9,650
- Total: ~CHF 31,650 (31.7% effective rate)
More complex but potentially advantageous for higher earners:
Corporate income tax: The LLC pays tax on profits at federal (8.5% effective rate) and cantonal rates (varies 12-21% total depending on canton and municipality).
Personal income tax: You pay tax on your salary as ordinary income, plus tax on any dividends received (though dividends get partial relief—typically taxed at 60-80% of value at cantonal level due to participation relief).
Payroll taxes: Your LLC pays employer social security contributions (~6% of your salary).
Wealth tax: Your LLC shares count as personal wealth.
Example scenario (Zurich, CHF 150k revenue):
Option A: Pay yourself CHF 120k salary, retain CHF 30k in company
- Corporate tax on CHF 30k: ~CHF 4,500
- Your income tax on CHF 120k salary: ~CHF 28,000
- Your AVS/AHV on salary: ~CHF 11,600
- Employer AVS/AHV paid by LLC: ~CHF 7,200
- Total taxes: ~CHF 51,300 (34.2%)
Option B: As sole proprietor with CHF 150k profit
- Income tax: ~CHF 37,000
- AVS/AHV: ~CHF 14,500
- Total taxes: ~CHF 51,500 (34.3%)
At this income level, there's minimal difference. The LLC advantage emerges at higher incomes (CHF 200k+) where salary/dividend optimization and lower corporate rates on retained earnings create savings.
Key insight: Don't form an LLC purely for tax savings unless you're retaining significant profits in the business or earning CHF 200,000+. The tax optimization potential exists but requires professional planning.